Correct Answer - Option 1 : 3, 1, 4, 2, 5
3. Room → 1. House → 4. Hamlet → 2. Road → 5. District
Room is the smallest unit here, collection of the room makes a house then several houses in a certain place makes a hamlet (a kind of very small village) then roads are created to connect these houses after that when these houses and road are created in large number these are collectively called as districts.
The correct sequence is 3, 1, 4, 2, 5.
Hence, "option 1" is the correct answer.